A former state assemblywoman from Brooklyn has been sentenced to two to six years in prison for offering to help a developer buy city land in exchange for a free house. Diane Gordon, a four-term Democrat from East New York, ran for re-election after her indictment and won. The former schoolteacher lost her seat when she was convicted. The developer, Ranjan Batheja, cooperated with the authorities and took video and audio recordings of Gordon after he was caught trying to bribe an undercover agent. He wanted to develop a $2 million parcel of vacant city land on New Lots Avenue in Brooklyn.